In the end of 1st and in the beginning of 2nd month at the child conditioned reflexes start to be formed. It means that the cortex of a brain starts to ripen and sense organs are differentiated.
Formation of conditioned reflexes at children[ru] is bound exclusively with medium surrounding them, a regimen, care of them. As at the child of a cell of a cortex of a brain are developed insufficiently again formed reflexes at it are fragile and easily die away under the influence of strong stimuluses. If the child gets to an unusual situation for it it quite often loses the got skills. Unusual borings and impressions cause an excessive boring of a cortex of a brain and diffusion of this boring that is expressed in anxiety of the child, whims, crying, cry or block, slackness and drowsiness.
The newborn child almost all time sleeps. It is absolutely helpless, does not hold a head, not in a condition to change position of the body, randomly moves arms and feet. To the beginning of 2nd month the child starts to smile, look after bright, large subjects. In process of development of the central nervous system and a musculation the child from 5-6 weeks starts to hold a head, and by 2 months holds it already well and, laying on a back, can lift it, in position on a stomach watches moving subjects and turns behind them a head. At this time the child starts to react on pull, a smile and conversation — briskly moves, smiles.– Далее –
